Thermostatic valve.



R. T. PARISEN.

THERMUSTATIC VALVE.

APPLlcATloN FILED MAR,11.19|s.

Patented Sept, 3, 1918. v

WITNESSES INVENTOR UNITED sTATEs PATEN orme.

ROBERT T. PAnIsEN, or PITTSBURGH, PENNSYLVANIA, ,AssIeNoii To 'LAwsoN MANUFACTURING coMPANY, or PITTSBURGH, PENNsY/LVANIA, A coRPoRA- yj THEnMosTATIc vALvE.

- specification of Lettersr'atent.

Patented sept. 3, 191s.

To all whom mag/concern.'

Be it known that I, ROBERT T. PARISN,

j a citizen of the United States, andv resident of Pittsburgh, in the county'o Allegheny and State of Pennsylvania, have invented certain new and useful Improvements 1n Thermostatic Valves', of which the following is a specification."

This invention relates to a thermostatic valve of the general type Aillustrated by Letters Patent No. 1,07 5,934, October14, 1913, and No. 1,102,070, June 30, 1914, wherein the action of the thermostat is transmitted to the valve through interposed movement-compounding levers, and the primary object herein is to provide a simplified and ecient construction, particularly with respect to the means employed for adjusting the mechanism. to predetermined temperatures. As in Patent No. 1,07 5,934', the compoundinglevers are mounted on a support that is adjustable in the direction of movement of the thermostat, .and with the mechanism of the present' invention this adjustment is had by rotating the support within the valve body and thereby, by means of its threaded connection, adjusting it in the directi'on of movement of the thermostat. And

in the preferred construction the arrangement is such 'that the adjustment of the support is accomplished by rotating acap-like part at the exterior of the valve body, whereby the temperature to be maintained is determined by graduations on the body with which a pointer on the rotatable'cap coperates.

In the accompanying drawings, is longitudinal sectional elevation of the improved valve` mechanism, 'and Fig'. 2 is a similar view taken at right angles to Fig. 1. Fig. 3 is 2.. Fig.

. mounted on stem 8 movable through the seat,

the valve 'being held normally seated by spring 9;

Figure 1'v a cross section on line 3-3 ofhFig. 4 is a .detailed view of the adjustable support for the movementmultiplying At one side of body 2 is the annular openend extension 10, internally threaded as shown, and adjustably uniting therewith is the annular externally -threaded collar 11 of the cap-like closure 11. This collarl is formed with the body embracing flange 12 cut away at 12 and formed with pointer 13 for coperating with the temperature indications 14 on body extension 10.

The portion of body 2 opposite its open side is formed with the tubular extension 15, threaded at 15 to connect with the wall Aof the water heater or other container, not

eor

shown, 4and projecting from this tubular v extension is e copper or other thermostatic tube 16 which incloses the thermostatic rod element 17, formed preferably of porcelain or other neutral material'. lThe outer end of the rod may bear against a plug 16 which closes tube 16, and the inner end of the'rod extends into the tubular body extension 15'. Within body 2 is a support for the move- ,ment compounding mechanlsm which operatively' connects rod 17 with valve stem 8.

po'site end the similar arms 20, the latter be- Aingprolonged in the single arm 21'which is As here' shown this support consists of' a i enteredbetween the jaw-like lugs 22 project ing from the inner side of cap 11. Secured .to and pro'ecting from bifurcated base 18 is the tubu ar externally threaded stem 23 which when support 18 is rotated is-adjustable in the threaded bore 24 of body extension 15. Pivotally mounted ybetween the supportarms 19 and 20 are the coperating movement-compounding levers 25. An assemblage of .three levers is here shown, one

, being in engagement with the valve stem 8 for moving the valve 1n opposition Ato spring 9, while another ofthe levers projects across and is engaged bythe extremity ofthermostatic rod 17.

' In operation, it willl be understood that movement of rod 17 resulting from the contraction of tube 16 transmits movement through levers 25 tothe valve, the arrangement being such that very slight contraction of tube 16 results 1n a-materially greater movement of the valve.` For adjusting or setting the mechanism, it is only necessary to lrotate* cap 11. to place pointer 13 at the temperature desired, such rotation 'of the cap around valve 7 to sustain a pilot-burner. 0r

if an external pilot-burner connection is desired, it may extend from the plugged outlet 28.

l claim:

l. rihe combination of a valve body having a valve seat, a valve, a thermostatic device, a support rotatable Within and having 4threaded connection with the body for adjusting the support in the direction of movement of the thermostat, appart rotatable at the exterior of the body and connected to the support for rotating the latter, and means carried by the support for operatively connecting the valve and the thermostatic device.

2. The combination of a valve body having a valve seat, a valve, a thermostatic device, a support rotatable in the body and having threaded connection therewith for adjusting the support in the direction of movement of the thermostat, cooperating movement compounding levers carried by the support and operatively connecting the valve and thermostatic device, and means located at the exterior of the body for adjusting said support.

3. rlhe combination of a valve body having a valve seat, a valve, a thermostatic device, a support rotatable within and having threaded connection with the body for adjusting the support in the direction of movement'of the thermostat, the valve body open at one side and a rotatable closure for said open side, an operative connection between the closure and the support for causing the latter to rotate with the closure, and means carried by the support for operatively connecting the valve and the ther' mostatic device.

Li. rlhe combination of a valve body having a valve seat, a valve, 'a thermostatic device including a valve actuating rod projecting into the body, a support rotatable within the body about an axis concentric with said rod and having a correspondingly concentric threaded connection with the body whereby rotation of the support adjusts the same in the direction of movement of the thermostat, means carried by the support for connecting the valve and the thermostatic device, and a cap threaded to said body for adjusting said support.

5. rlhe combination of a valve body having a valve seat, a valve, a thermostatic device, a support rotatable within the body e. Lafrance concentrically with the thermostat and the valve axis, the support having threaded c011- Iiection with the body whereby when the support is rotated it is moved longitudinally of the thermostat, coperating movementcompounding levers carried by the support and operatively connecting the valve and the thermostat, and means located exteriorly to said body for rotating said support.

6. rlhe combination of a valve body having a valve seat, a valve, the body open at one side and a rotatable closure therefor adjustably connecting with the body, a support rotatable within the body and having threaded connection therewith whereby when the support is rotated it is moved longitudinally of the thermostatic device, an arm projecting from the support and engaged by the closure whereby the support and closure are caused to rotate in unison,

and means carried by the support for operatively connecting the valve and the thermostat.

7. The combination of a valve body having a valve seat, a valve, the body formed with a tubular extension adapted to connect with the wall of a water container, a thermostatic tube projecting from said extension, a rod within and actuated by the tube with one end of the rod extending into the tubular body-extension, a support longitudinally arranged within the body and having a hollow supporting neck portion longitudinally adjustable in said body extension and embracing and adjustable longitudinally of said rod, means carried by the support for operatively connecting the valve and said rod and a cap threaded to said body and having connection with said support for rotating the same.

8. ln combination, a valve body having a port, a valve controlling said port, said body having a longitudinally threaded bore at its inner end, a threaded rotary supporting neck screwed into said bore andladjustable longitudinally thereof and provided with a lever support arranged Within the body, a series of movement-compounding levers carried by said support and controlling said valve, a thermostat comprising a rod movable in said neck for actuating said lever, and means operative at the exterior of said body and having operative connection with said support for rotating the same and said neck.

In testimony whereof l aiix my signature in presence of two witnesses.

ROBERT T. PARXSEN.

Witnesses:

d. M. Nnseifr, E. B. Morrnn. 

